Finding the Fourth Proportional to 12,060.01, 18,007.92 and 10,642.60

Step by Step Solution

1. Step 1: Write the proportion equation
   12,060.01 : 18,007.92 = 10,642.60 : x
2. Step 2: Convert to fraction form
   12,060.01/18,007.92 = 10,642.60/x
3. Step 3: Cross multiply
   12,060.01x = 18,007.92 × 10,642.60
4. Step 4: Simplify right side
   12,060.01x = 191,651,044.37
5. Step 5: Solve for x
   x = 191,651,044.37/12,060.01
6. Step 6: Final answer
   x = 15,891.45